High Concentration Nasal Oxygen Mask

摘要

A high concentration nasal oxygen mask for delivering high concentrations of oxygen to a patient via the nasal passages of the patient. The high concentration nasal oxygen mask includes a mask portion for enclosing the nose of the patient, an oxygen reserve bag for receiving a supply of oxygen from an external source, a one-way valve for allowing the passage of oxygen in only one direction from the reserve bag to the mask, and a one-way flap to allow the patient's expired gases to flow out of the mask without allowing atmospheric gases back into the mask.

主权项

1. A high concentration oxygen mask comprising a mask portion adapted to enclose the nasal passages of a medical patient; a sleeve including a one-way valve therein, said sleeve attached to one side of said mask portion and adapted such that when said medical patient breathes inward oxygen flows through said sleeve, pushes the one-way valve open, and continues into the mask portion, and adapted such that when said medical patient breathes outward said one-way valve is pushed closed and does not allow expired gases to flow through said sleeve; and a one-way flap located on said one side of said mask portion and is adapted to open and close allowing expired gases of said medical patient to flow out from said mask portion without allowing atmospheric gases back into said mask portion.